CVE Alert: CVE-2025-27421
Vulnerability Summary: CVE-2025-27421
Abacus is a highly scalable and stateless counting API. A critical goroutine leak vulnerability has been identified in the Abacus server’s Server-Sent Events (SSE) implementation. The issue occurs when clients disconnect from the /stream endpoint, as the server fails to properly clean up resources and terminate associated goroutines. This leads to resource exhaustion where the server continues running but eventually stops accepting new SSE connections while maintaining high memory usage. The vulnerability specifically involves improper channel cleanup in the event handling mechanism, causing goroutines to remain blocked indefinitely. This vulnerability is fixed in 1.4.0.
Affected Endpoints:
No affected endpoints listed.
Published Date:
3/3/2025, 5:15:15 PM
🔥 CVSS Score:
Exploit Status:
Not ExploitedReferences:
- https://github.com/JasonLovesDoggo/abacus/commit/898ff1204e11317cc161240b660e63eed5a72b33
- https://github.com/JasonLovesDoggo/abacus/security/advisories/GHSA-vh64-54px-qgf8
Recommended Action:
No proposed action available. Please refer to vendor documentation for updates.
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